An attorney for rapper Pitbull, who's being sued by the starlet for namechecking her in an unflattering manner (and not paying her!) in "Give Me Everything," has taken the litigation to the next level by filing court papers accusing Lohan's attorney of plagiarizing her latest legal briefs, alleging that she lifted her arguments from online sources.

Lohan's lawyer, Stephanie Ovadia, has not yet returned requests for comment. But what gives?!

Ovadia's latest filing "reflects the frivolous nature of Ms. Lohan's claims," states Pitbull's attorney, Marcos Daniel Jimenez, in court documents obtained by E! News. "Its legal discussion mostly consists of plagiarized excerpts of articles found on various websites without explaining their relevance to the facts and issues in this case. The opposition fails to meaningfully address the arguments raised in [Jimenez's motion to dismiss], does not distinguish a single case relied upon by Defendants, and reveals a lack of independent research."

Jimenez also filed examples of the alleged plagiarism, including side-by-side excerpts of Ovadia's briefs and articles from the Los Angeles Times, the Association of Corporate Counsel and other websites.

Lohan is suing Pitbull (real name Armando Christian Perez) for allegedly exploiting and misappropriating her image with the lyric, "I got it locked up like Lindsay Lohan," in his hit collaboration with Ne-Yo.

Pitbull's camp maintains that he has the right, as an artist, to express himself freely in his creative work. Ne-Yo, Sony Music Holdings, RCA Music Group, Polo Grounds Music and Mr. 305 Enterprise are also named as parties to the lawsuit.